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Finding the Fourth Proportional to 6,407.12, 8,839.14 and 4,168.28

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Solution

The fourth proportional to 6,407.12, 8,839.14 and 4,168.28 is: 5,750.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,407.12 : 8,839.14 = 4,168.28 : x
  2. Step 2: Convert to fraction form
    6,407.12/8,839.14 = 4,168.28/x
  3. Step 3: Cross multiply
    6,407.12x = 8,839.14 × 4,168.28
  4. Step 4: Simplify right side
    6,407.12x = 36,844,010.48
  5. Step 5: Solve for x
    x = 36,844,010.48/6,407.12
  6. Step 6: Final answer
    x = 5,750.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.